Unable to get the cone to show up on the animated radar?

Hello everyone. I am implementing the animated radar over my google maps and for some reason I am not able to get the cone showing the speed / direction of the storm to show up with the animated radar.

However even with that it is just showing the radar storm overlay and no cone. Anyone have any idea on how to show the cones for the storm like on the image example when visiting the main page: https://www.wunderground.com/weather/api